524 lines
12 KiB
C
524 lines
12 KiB
C
/* Implementation of the FINDLOC intrinsic
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Copyright (C) 2018-2022 Free Software Foundation, Inc.
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Contributed by Thomas König <tk@tkoenig.net>
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "libgfortran.h"
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#include <assert.h>
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#if defined (HAVE_GFC_REAL_4)
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extern void findloc1_r4 (gfc_array_index_type * const restrict retarray,
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gfc_array_r4 * const restrict array, GFC_REAL_4 value,
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const index_type * restrict pdim, GFC_LOGICAL_4 back);
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export_proto(findloc1_r4);
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extern void
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findloc1_r4 (gfc_array_index_type * const restrict retarray,
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gfc_array_r4 * const restrict array, GFC_REAL_4 value,
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const index_type * restrict pdim, GFC_LOGICAL_4 back)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type dstride[GFC_MAX_DIMENSIONS];
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const GFC_REAL_4 * restrict base;
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index_type * restrict dest;
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index_type rank;
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index_type n;
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index_type len;
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index_type delta;
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index_type dim;
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int continue_loop;
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/* Make dim zero based to avoid confusion. */
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rank = GFC_DESCRIPTOR_RANK (array) - 1;
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dim = (*pdim) - 1;
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if (unlikely (dim < 0 || dim > rank))
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{
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runtime_error ("Dim argument incorrect in FINDLOC intrinsic: "
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"is %ld, should be between 1 and %ld",
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(long int) dim + 1, (long int) rank + 1);
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}
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len = GFC_DESCRIPTOR_EXTENT(array,dim);
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if (len < 0)
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len = 0;
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delta = GFC_DESCRIPTOR_STRIDE(array,dim);
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for (n = 0; n < dim; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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if (extent[n] < 0)
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extent[n] = 0;
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}
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for (n = dim; n < rank; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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if (extent[n] < 0)
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extent[n] = 0;
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}
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if (retarray->base_addr == NULL)
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{
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size_t alloc_size, str;
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for (n = 0; n < rank; n++)
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{
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if (n == 0)
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str = 1;
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else
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str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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}
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retarray->offset = 0;
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retarray->dtype.rank = rank;
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alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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retarray->base_addr = xmallocarray (alloc_size, sizeof (index_type));
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if (alloc_size == 0)
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{
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/* Make sure we have a zero-sized array. */
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GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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return;
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}
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}
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else
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{
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if (rank != GFC_DESCRIPTOR_RANK (retarray))
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runtime_error ("rank of return array incorrect in"
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" FINDLOC intrinsic: is %ld, should be %ld",
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(long int) (GFC_DESCRIPTOR_RANK (retarray)),
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(long int) rank);
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if (unlikely (compile_options.bounds_check))
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bounds_ifunction_return ((array_t *) retarray, extent,
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"return value", "FINDLOC");
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}
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for (n = 0; n < rank; n++)
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{
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count[n] = 0;
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dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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if (extent[n] <= 0)
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return;
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}
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dest = retarray->base_addr;
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continue_loop = 1;
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base = array->base_addr;
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while (continue_loop)
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{
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const GFC_REAL_4 * restrict src;
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index_type result;
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result = 0;
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if (back)
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{
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src = base + (len - 1) * delta * 1;
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for (n = len; n > 0; n--, src -= delta * 1)
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{
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if (*src == value)
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{
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result = n;
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break;
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}
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}
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}
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else
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{
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src = base;
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for (n = 1; n <= len; n++, src += delta * 1)
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{
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if (*src == value)
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{
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result = n;
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break;
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}
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}
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}
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*dest = result;
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count[0]++;
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base += sstride[0] * 1;
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dest += dstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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count[n] = 0;
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base -= sstride[n] * extent[n] * 1;
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dest -= dstride[n] * extent[n];
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n++;
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if (n >= rank)
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{
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continue_loop = 0;
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break;
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}
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else
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{
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count[n]++;
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base += sstride[n] * 1;
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dest += dstride[n];
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}
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}
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}
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}
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extern void mfindloc1_r4 (gfc_array_index_type * const restrict retarray,
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gfc_array_r4 * const restrict array, GFC_REAL_4 value,
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const index_type * restrict pdim, gfc_array_l1 *const restrict mask,
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GFC_LOGICAL_4 back);
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export_proto(mfindloc1_r4);
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extern void
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mfindloc1_r4 (gfc_array_index_type * const restrict retarray,
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gfc_array_r4 * const restrict array, GFC_REAL_4 value,
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const index_type * restrict pdim, gfc_array_l1 *const restrict mask,
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GFC_LOGICAL_4 back)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type sstride[GFC_MAX_DIMENSIONS];
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index_type mstride[GFC_MAX_DIMENSIONS];
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index_type dstride[GFC_MAX_DIMENSIONS];
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const GFC_REAL_4 * restrict base;
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const GFC_LOGICAL_1 * restrict mbase;
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index_type * restrict dest;
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index_type rank;
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index_type n;
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index_type len;
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index_type delta;
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index_type mdelta;
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index_type dim;
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int mask_kind;
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int continue_loop;
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/* Make dim zero based to avoid confusion. */
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rank = GFC_DESCRIPTOR_RANK (array) - 1;
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dim = (*pdim) - 1;
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if (unlikely (dim < 0 || dim > rank))
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{
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runtime_error ("Dim argument incorrect in FINDLOC intrinsic: "
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"is %ld, should be between 1 and %ld",
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(long int) dim + 1, (long int) rank + 1);
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}
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len = GFC_DESCRIPTOR_EXTENT(array,dim);
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if (len < 0)
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len = 0;
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delta = GFC_DESCRIPTOR_STRIDE(array,dim);
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mdelta = GFC_DESCRIPTOR_STRIDE_BYTES(mask,dim);
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mbase = mask->base_addr;
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mask_kind = GFC_DESCRIPTOR_SIZE (mask);
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if (mask_kind == 1 || mask_kind == 2 || mask_kind == 4 || mask_kind == 8
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#ifdef HAVE_GFC_LOGICAL_16
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|| mask_kind == 16
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#endif
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)
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mbase = GFOR_POINTER_TO_L1 (mbase, mask_kind);
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else
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internal_error (NULL, "Funny sized logical array");
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for (n = 0; n < dim; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE(array,n);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask,n);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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if (extent[n] < 0)
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extent[n] = 0;
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}
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for (n = dim; n < rank; n++)
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{
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sstride[n] = GFC_DESCRIPTOR_STRIDE(array, n + 1);
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mstride[n] = GFC_DESCRIPTOR_STRIDE_BYTES(mask, n + 1);
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extent[n] = GFC_DESCRIPTOR_EXTENT(array, n + 1);
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if (extent[n] < 0)
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extent[n] = 0;
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}
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if (retarray->base_addr == NULL)
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{
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size_t alloc_size, str;
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for (n = 0; n < rank; n++)
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{
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if (n == 0)
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str = 1;
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else
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str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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}
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retarray->offset = 0;
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retarray->dtype.rank = rank;
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alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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retarray->base_addr = xmallocarray (alloc_size, sizeof (index_type));
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if (alloc_size == 0)
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{
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/* Make sure we have a zero-sized array. */
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GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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return;
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}
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}
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else
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{
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if (rank != GFC_DESCRIPTOR_RANK (retarray))
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runtime_error ("rank of return array incorrect in"
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" FINDLOC intrinsic: is %ld, should be %ld",
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(long int) (GFC_DESCRIPTOR_RANK (retarray)),
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(long int) rank);
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if (unlikely (compile_options.bounds_check))
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bounds_ifunction_return ((array_t *) retarray, extent,
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"return value", "FINDLOC");
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}
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for (n = 0; n < rank; n++)
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{
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count[n] = 0;
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dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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if (extent[n] <= 0)
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return;
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}
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dest = retarray->base_addr;
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continue_loop = 1;
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base = array->base_addr;
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while (continue_loop)
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{
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const GFC_REAL_4 * restrict src;
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const GFC_LOGICAL_1 * restrict msrc;
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index_type result;
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result = 0;
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if (back)
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{
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src = base + (len - 1) * delta * 1;
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msrc = mbase + (len - 1) * mdelta;
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for (n = len; n > 0; n--, src -= delta * 1, msrc -= mdelta)
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{
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if (*msrc && *src == value)
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{
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result = n;
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break;
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}
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}
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}
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else
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{
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src = base;
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msrc = mbase;
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for (n = 1; n <= len; n++, src += delta * 1, msrc += mdelta)
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{
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if (*msrc && *src == value)
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{
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result = n;
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break;
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}
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}
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}
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*dest = result;
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count[0]++;
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base += sstride[0] * 1;
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mbase += mstride[0];
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dest += dstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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count[n] = 0;
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base -= sstride[n] * extent[n] * 1;
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mbase -= mstride[n] * extent[n];
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dest -= dstride[n] * extent[n];
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n++;
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if (n >= rank)
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{
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continue_loop = 0;
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break;
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}
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else
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{
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count[n]++;
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base += sstride[n] * 1;
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dest += dstride[n];
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}
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}
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}
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}
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extern void sfindloc1_r4 (gfc_array_index_type * const restrict retarray,
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gfc_array_r4 * const restrict array, GFC_REAL_4 value,
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const index_type * restrict pdim, GFC_LOGICAL_4 *const restrict mask,
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GFC_LOGICAL_4 back);
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export_proto(sfindloc1_r4);
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extern void
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sfindloc1_r4 (gfc_array_index_type * const restrict retarray,
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gfc_array_r4 * const restrict array, GFC_REAL_4 value,
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const index_type * restrict pdim, GFC_LOGICAL_4 *const restrict mask,
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GFC_LOGICAL_4 back)
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{
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index_type count[GFC_MAX_DIMENSIONS];
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index_type extent[GFC_MAX_DIMENSIONS];
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index_type dstride[GFC_MAX_DIMENSIONS];
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index_type * restrict dest;
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index_type rank;
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index_type n;
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index_type len;
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index_type dim;
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bool continue_loop;
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if (mask == NULL || *mask)
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{
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findloc1_r4 (retarray, array, value, pdim, back);
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return;
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}
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/* Make dim zero based to avoid confusion. */
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rank = GFC_DESCRIPTOR_RANK (array) - 1;
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dim = (*pdim) - 1;
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if (unlikely (dim < 0 || dim > rank))
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{
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runtime_error ("Dim argument incorrect in FINDLOC intrinsic: "
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"is %ld, should be between 1 and %ld",
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(long int) dim + 1, (long int) rank + 1);
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}
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len = GFC_DESCRIPTOR_EXTENT(array,dim);
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if (len < 0)
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len = 0;
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for (n = 0; n < dim; n++)
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{
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extent[n] = GFC_DESCRIPTOR_EXTENT(array,n);
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if (extent[n] <= 0)
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extent[n] = 0;
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}
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for (n = dim; n < rank; n++)
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{
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extent[n] =
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GFC_DESCRIPTOR_EXTENT(array,n + 1);
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if (extent[n] <= 0)
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extent[n] = 0;
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}
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if (retarray->base_addr == NULL)
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{
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size_t alloc_size, str;
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for (n = 0; n < rank; n++)
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{
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if (n == 0)
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str = 1;
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else
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str = GFC_DESCRIPTOR_STRIDE(retarray,n-1) * extent[n-1];
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GFC_DIMENSION_SET(retarray->dim[n], 0, extent[n] - 1, str);
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}
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retarray->offset = 0;
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retarray->dtype.rank = rank;
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alloc_size = GFC_DESCRIPTOR_STRIDE(retarray,rank-1) * extent[rank-1];
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retarray->base_addr = xmallocarray (alloc_size, sizeof (index_type));
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if (alloc_size == 0)
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{
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/* Make sure we have a zero-sized array. */
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GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
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return;
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}
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}
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else
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{
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if (rank != GFC_DESCRIPTOR_RANK (retarray))
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runtime_error ("rank of return array incorrect in"
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" FINDLOC intrinsic: is %ld, should be %ld",
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(long int) (GFC_DESCRIPTOR_RANK (retarray)),
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(long int) rank);
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if (unlikely (compile_options.bounds_check))
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bounds_ifunction_return ((array_t *) retarray, extent,
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"return value", "FINDLOC");
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}
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for (n = 0; n < rank; n++)
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{
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count[n] = 0;
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dstride[n] = GFC_DESCRIPTOR_STRIDE(retarray,n);
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if (extent[n] <= 0)
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return;
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}
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dest = retarray->base_addr;
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continue_loop = 1;
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while (continue_loop)
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{
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*dest = 0;
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count[0]++;
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dest += dstride[0];
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n = 0;
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while (count[n] == extent[n])
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{
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count[n] = 0;
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dest -= dstride[n] * extent[n];
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n++;
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if (n >= rank)
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{
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continue_loop = 0;
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break;
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}
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else
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{
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count[n]++;
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dest += dstride[n];
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}
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}
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}
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}
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#endif
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